Rapid determination of organochlorine pesticides and polychlorinated biphenyls, using selected ion monitoring mass spectrometry

Journal Article · · J. Assoc. Off. Anal. Chem.; (United States)

OSTI ID:5866814

Hargesheimer, E E

Methane chemical ionization (CI)-selected ion monitoring (SIM) mass spectrometry was used to identify and conclusively distinguish 19 organochlorine pesticides from polychlorinated biphenyls (PCBs) at parts-per-trillion to parts-per-billion levels in environmental water sample extracts with minimal sample cleanup. Two CI-SIM screens were developed. One set of ions scanned specifically for the presence of 4 classes of pesticides; diphenylmethane derivatives, bridged polycyclic chlorinated benzenes, and acetanilide pesticides. The second set of ions responded exclusively to PCBs with biphenyl moieties containing from 1 to 8 chlorine atoms. Eight commercial Aroclor mixtures were analyzed and distinguished from the pesticides groups. The detection limit for pesticides and PCBs by CI-SIM screening was 0.005 and 0.1 ppB, respectively. CI-SIM can be used as an alternative method for the analysis of biological or environmental samples containing interferences that complicate the detection of PCBs and chlorinated pesticides. 8 references, 6 figures, 6 tables.

• Research Organization: City of Calgary, Alberta
• OSTI ID: 5866814
• Journal Information: J. Assoc. Off. Anal. Chem.; (United States), Journal Name: J. Assoc. Off. Anal. Chem.; (United States) Vol. 67:6; ISSN JANCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
400104 -- Spectral Procedures-- (-1987)
AROMATICS
CHEMICAL ANALYSIS
CHLORINATED AROMATIC HYDROCARBONS
HALOGENATED AROMATIC HYDROCARBONS
HYDROGEN COMPOUNDS
MASS SPECTROSCOPY
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
PESTICIDES
POLLUTION
QUANTITATIVE CHEMICAL ANALYSIS
SPECTROSCOPY
WATER
WATER POLLUTION